Question

read the following passage.
cause of colds
the common cold is caused by a virus, which travels through the air into the nose. there are more than 100 types of cold viruses! the most common is the rhinovirus.
which sentence from this passage reflects the main idea?
the common cold is caused by a virus, which travels through the air into the nose.
there are more than 100 types of cold viruses!
the most common is the rhinovirus.
everyone gets colds.

Explanation:

The main idea of a passage is the central point. Here, the passage is about the cause of colds. The first sentence "The common cold is caused by a virus, which travels through the air into the nose" sets the topic of what causes colds. The other sentences (about the number of cold viruses and the most common one) are details that support the main idea. The option "Everyone gets colds" is not even in the passage.

Answer:

The common cold is caused by a virus, which travels through the air into the nose.